darkcomet | 482db49b56d32a64bdee5e75639e30de7ed7481675e217c670f5b564426c233b

Analysis

max time kernel
149s
max time network
146s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
17/08/2024, 08:39

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General

Target

a1e0143bee6e9d53d1c290e34ef34775_JaffaCakes118.exe
Size

733KB
MD5

a1e0143bee6e9d53d1c290e34ef34775
SHA1

04482b63cf83830cc858564e36273df9ebe67a24
SHA256

482db49b56d32a64bdee5e75639e30de7ed7481675e217c670f5b564426c233b
SHA512

56812848d06d9061446508680881e3ca6706b7e94efa4ce8da541b1fa623220b52b7e2b608a229ecc5e31c8e6922c918ce2713f830577a67def05a29358ab51a
SSDEEP

12288:TpwABK90BOe/x9lPAYvxPQVjdsAY2XjWlnlTTMMXG96uhKI0n/SG:1wAcu99lPzvxP+Bsz2XjWT/MQcVkI0nL

Score

10^/10

darkcomet discovery persistence rat trojan

Malware Config

Signatures

Darkcomet
DarkComet is a remote access trojan (RAT) developed by Jean-Pierre Lesueur.
trojan rat darkcomet

Modifies WinLogon for persistence 2 TTPs 1 IoCs

persistence

Winlogon Helper DLL

T1547.004

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\UserInit = "C:\\Windows\\system32\\userinit.exe,C:\\Windupdt\\winupdate.exe"	a1e0143bee6e9d53d1c290e34ef34775_JaffaCakes118.exe

Checks BIOS information in registry 2 TTPs 2 IoCs

BIOS information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosDate	a1e0143bee6e9d53d1c290e34ef34775_JaffaCakes118.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosDate	explorer.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-656926755-4116854191-210765258-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\winupdater = "C:\\Windupdt\\winupdate.exe"	a1e0143bee6e9d53d1c290e34ef34775_JaffaCakes118.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1748 set thread context of 1976	1748	a1e0143bee6e9d53d1c290e34ef34775_JaffaCakes118.exe	83

System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	a1e0143bee6e9d53d1c290e34ef34775_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	explorer.exe

Checks processor information in registry 2 TTPs 8 IoCs

Processor information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\VendorIdentifier	explorer.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	a1e0143bee6e9d53d1c290e34ef34775_JaffaCakes118.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	a1e0143bee6e9d53d1c290e34ef34775_JaffaCakes118.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier	a1e0143bee6e9d53d1c290e34ef34775_JaffaCakes118.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\VendorIdentifier	a1e0143bee6e9d53d1c290e34ef34775_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	explorer.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	explorer.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier	explorer.exe

Enumerates system info in registry 2 TTPs 2 IoCs

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\Identifier	a1e0143bee6e9d53d1c290e34ef34775_JaffaCakes118.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\Identifier	explorer.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
1976	explorer.exe

Suspicious use of AdjustPrivilegeToken 48 IoCs

description	pid	Process
Token: SeIncreaseQuotaPrivilege	1748	a1e0143bee6e9d53d1c290e34ef34775_JaffaCakes118.exe
Token: SeSecurityPrivilege	1748	a1e0143bee6e9d53d1c290e34ef34775_JaffaCakes118.exe
Token: SeTakeOwnershipPrivilege	1748	a1e0143bee6e9d53d1c290e34ef34775_JaffaCakes118.exe
Token: SeLoadDriverPrivilege	1748	a1e0143bee6e9d53d1c290e34ef34775_JaffaCakes118.exe
Token: SeSystemProfilePrivilege	1748	a1e0143bee6e9d53d1c290e34ef34775_JaffaCakes118.exe
Token: SeSystemtimePrivilege	1748	a1e0143bee6e9d53d1c290e34ef34775_JaffaCakes118.exe
Token: SeProfSingleProcessPrivilege	1748	a1e0143bee6e9d53d1c290e34ef34775_JaffaCakes118.exe
Token: SeIncBasePriorityPrivilege	1748	a1e0143bee6e9d53d1c290e34ef34775_JaffaCakes118.exe
Token: SeCreatePagefilePrivilege	1748	a1e0143bee6e9d53d1c290e34ef34775_JaffaCakes118.exe
Token: SeBackupPrivilege	1748	a1e0143bee6e9d53d1c290e34ef34775_JaffaCakes118.exe
Token: SeRestorePrivilege	1748	a1e0143bee6e9d53d1c290e34ef34775_JaffaCakes118.exe
Token: SeShutdownPrivilege	1748	a1e0143bee6e9d53d1c290e34ef34775_JaffaCakes118.exe
Token: SeDebugPrivilege	1748	a1e0143bee6e9d53d1c290e34ef34775_JaffaCakes118.exe
Token: SeSystemEnvironmentPrivilege	1748	a1e0143bee6e9d53d1c290e34ef34775_JaffaCakes118.exe
Token: SeChangeNotifyPrivilege	1748	a1e0143bee6e9d53d1c290e34ef34775_JaffaCakes118.exe
Token: SeRemoteShutdownPrivilege	1748	a1e0143bee6e9d53d1c290e34ef34775_JaffaCakes118.exe
Token: SeUndockPrivilege	1748	a1e0143bee6e9d53d1c290e34ef34775_JaffaCakes118.exe
Token: SeManageVolumePrivilege	1748	a1e0143bee6e9d53d1c290e34ef34775_JaffaCakes118.exe
Token: SeImpersonatePrivilege	1748	a1e0143bee6e9d53d1c290e34ef34775_JaffaCakes118.exe
Token: SeCreateGlobalPrivilege	1748	a1e0143bee6e9d53d1c290e34ef34775_JaffaCakes118.exe
Token: 33	1748	a1e0143bee6e9d53d1c290e34ef34775_JaffaCakes118.exe
Token: 34	1748	a1e0143bee6e9d53d1c290e34ef34775_JaffaCakes118.exe
Token: 35	1748	a1e0143bee6e9d53d1c290e34ef34775_JaffaCakes118.exe
Token: 36	1748	a1e0143bee6e9d53d1c290e34ef34775_JaffaCakes118.exe
Token: SeIncreaseQuotaPrivilege	1976	explorer.exe
Token: SeSecurityPrivilege	1976	explorer.exe
Token: SeTakeOwnershipPrivilege	1976	explorer.exe
Token: SeLoadDriverPrivilege	1976	explorer.exe
Token: SeSystemProfilePrivilege	1976	explorer.exe
Token: SeSystemtimePrivilege	1976	explorer.exe
Token: SeProfSingleProcessPrivilege	1976	explorer.exe
Token: SeIncBasePriorityPrivilege	1976	explorer.exe
Token: SeCreatePagefilePrivilege	1976	explorer.exe
Token: SeBackupPrivilege	1976	explorer.exe
Token: SeRestorePrivilege	1976	explorer.exe
Token: SeShutdownPrivilege	1976	explorer.exe
Token: SeDebugPrivilege	1976	explorer.exe
Token: SeSystemEnvironmentPrivilege	1976	explorer.exe
Token: SeChangeNotifyPrivilege	1976	explorer.exe
Token: SeRemoteShutdownPrivilege	1976	explorer.exe
Token: SeUndockPrivilege	1976	explorer.exe
Token: SeManageVolumePrivilege	1976	explorer.exe
Token: SeImpersonatePrivilege	1976	explorer.exe
Token: SeCreateGlobalPrivilege	1976	explorer.exe
Token: 33	1976	explorer.exe
Token: 34	1976	explorer.exe
Token: 35	1976	explorer.exe
Token: 36	1976	explorer.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 1748 wrote to memory of 1976	1748	a1e0143bee6e9d53d1c290e34ef34775_JaffaCakes118.exe	83
PID 1748 wrote to memory of 1976	1748	a1e0143bee6e9d53d1c290e34ef34775_JaffaCakes118.exe	83
PID 1748 wrote to memory of 1976	1748	a1e0143bee6e9d53d1c290e34ef34775_JaffaCakes118.exe	83
PID 1748 wrote to memory of 1976	1748	a1e0143bee6e9d53d1c290e34ef34775_JaffaCakes118.exe	83
PID 1748 wrote to memory of 1976	1748	a1e0143bee6e9d53d1c290e34ef34775_JaffaCakes118.exe	83

C:\Users\Admin\AppData\Local\Temp\a1e0143bee6e9d53d1c290e34ef34775_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\a1e0143bee6e9d53d1c290e34ef34775_JaffaCakes118.exe"
1⤵
- Modifies WinLogon for persistence
- Checks BIOS information in registry
- Adds Run key to start application
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1748
- C:\Windows\SysWOW64\explorer.exe
  "C:\Windows\SysWOW64\explorer.exe"
  2⤵
  - Checks BIOS information in registry
  - System Location Discovery: System Language Discovery
  - Checks processor information in registry
  - Enumerates system info in registry
  - Suspicious behavior: GetForegroundWindowSpam
  - Suspicious use of AdjustPrivilegeToken
  PID:1976

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Winlogon Helper DLL

T1547.004

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Winlogon Helper DLL

T1547.004

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/1748-0-0x00000000006F0000-0x00000000006F1000-memory.dmp

Filesize
4KB

Download
memory/1748-6-0x0000000000400000-0x00000000004C8000-memory.dmp

Filesize
800KB

Download
memory/1976-3-0x0000000000400000-0x00000000004C8000-memory.dmp

Filesize
800KB

Download
memory/1976-5-0x0000000000400000-0x00000000004C8000-memory.dmp

Filesize
800KB

Download
memory/1976-4-0x0000000000400000-0x00000000004C8000-memory.dmp

Filesize
800KB

Download
memory/1976-7-0x0000000000400000-0x00000000004C8000-memory.dmp

Filesize
800KB

Download
memory/1976-11-0x0000000000400000-0x00000000004C8000-memory.dmp

Filesize
800KB

Download
memory/1976-10-0x0000000000400000-0x00000000004C8000-memory.dmp

Filesize
800KB

Download
memory/1976-9-0x0000000003160000-0x0000000003161000-memory.dmp

Filesize
4KB

Download
memory/1976-8-0x0000000000400000-0x00000000004C8000-memory.dmp

Filesize
800KB

Download
memory/1976-12-0x0000000000400000-0x00000000004C8000-memory.dmp

Filesize
800KB

Download
memory/1976-13-0x0000000000400000-0x00000000004C8000-memory.dmp

Filesize
800KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads